It costs me money, not time to claim shares which is the real issue here - I pay about the same if not more than I'd get in BTC from the shares but bear a serious risk of having my identity stolen by some shady US law firm/"lawyer" that is not even listed on the page and that still hasn't givben any proof of even being licensed or to exist other than a mail address.
If I get reimbursed for the costs that I have to bear to have YOU continue legally what you are doing and if I get better information where my personal information ends up, that might change.
Edit:
I'm sure there is NO real "law" regarding this that is 100% definitive how to handle this situation, only the interpretation/advice of your lawyer. Others (including judges) might have other interpretations.